Fix softmax #10123

Job	Run time
build (3.8, x64, ubuntu)	1h 31m 41s
build (3.8, x64, windows)	1h 31m 59s
build (3.11, x64, ubuntu)	1h 17m 55s
build (3.11, x64, macos)	32m 14s
build (3.11, x64, windows)	1h 35m 6s
build (3.12, x64, ubuntu)	1h 18m 2s
build (3.12, x64, macos)	30m 26s
build (3.12, x64, windows)	1h 31m 51s
build (3.9, macos, --cov=psyneulink)	51m 12s
build (3.9, ubuntu, --forked -m "not llvm")	38m 10s
build (3.9, x86, windows)	1h 35m 46s
build (3.10, ubuntu, --fp-precision=fp32)	1h 17m 51s
build (3.10, macos, -m benchmark --benchmark-enable --benchmark-only --benchmark-min-rounds=2 --b...	25m 27s
build (3.8, macos, min)	34m 39s
	15h 12m 19s

Provide feedback